Question

A cone has a base radius of 7 centimeters and a height of 21 centimeters.

What is the volume of the cone?

A.
28π cm3

B.
49π cm3

C.
147π cm3

D.
343π cm3

Answer 1

Start with the forumla for the volume of a cone (or dereive it from the cylindar):

\[V= \frac{1}{3} \times Base Area \times H\] \[V=\frac{1}{3} \times \pi r^{2} \times H\]and plug in known values.

Answer 2

@alex6799

Answer 3

@logan13: The advice given you by twvogels, above, is clear and correct. Please see what you can do with his information before asking more questions.

Answer 4

idk how to plug it in